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36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
{{QBDLDATE:05-20-2022}}
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{{QBDLTIME:23:08:12}}
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{{DISPLAYTITLE:_FILEEXISTS}}
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The '''_FILEEXISTS''' function determines if a designated file name exists and returns true (-1) or false (0).
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{{PageSyntax}}
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: {{Parameter|theFileExists%}} = [[_FILEEXISTS]]({{Parameter|filename$}})
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{{PageDescription}}
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* The {{Parameter|filename$}} parameter can be a literal or variable [[STRING|string]] value that can include a path.
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* The function returns -1 when a file exists and 0 when it does not.
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* The function reads the system information directly without using a [[SHELL]] procedure.
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* The function will use the appropriate Operating System path separators. [[_OS$]] can determine the operating system.
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* '''This function does not guarantee that a file can be accessed or opened, just that it exists.'''
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{{PageExamples}}
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{{Parameter|Example:'' Checks if a file exists before opening it.
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{{CodeStart}}
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{{Cl|IF}} {{Cl|_FILEEXISTS}}("mysettings.ini") THEN
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{{Cl|PRINT}} "Settings file found."
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{{Cl|END IF}}
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{{CodeEnd}}}}
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{{PageSeeAlso}}
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* [[_DIREXISTS]], [[_OS$]]
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* [[SHELL]], [[FILES]]
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* [[KILL]]
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{{PageNavigation}}
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